Patent Yard Sign in
Expired European patentEurope

Semiconductor memory device having an increased capacitance of memory cell

EP 0466426 B1 · Applicant: FUJITSU LIMITED

EPO PDF

Overview

The published document from the EPO: abstract, claims, description and drawings. Open it full size

Read the whole patent

Listed from its EPO record in Patent Yard's archive of European patents past their term. Its claims, description and drawings are in the EPO PDF and on Google Patents, and the Claude kit works from them.

Google PatentsEPO PDF

Why it's free to use

  • Filed July 8, 1991 and granted September 22, 1999. A European patent lasts at most 20 years from filing, so its term ended July 8, 2011.
  • A supplementary protection certificate, which can extend a medicine or crop-protection patent, adds at most five and a half years, so even that would have ended by January 8, 2017.
  • We check European rights only. A US or other national patent in its family could still be in force: check its family on Espacenet or Google Patents.
FiledJuly 8, 1991
PublishedJanuary 15, 1992
GrantedSeptember 22, 1999
Term endedJuly 8, 2011
Application numberEP 91306163
Classification (CPC)H10B12/31

Timeline

Timeline From EPO dates

1992199419961998200020022004200620082010Application filedJuly 8, 1991PublishedJan 15, 1992Patent grantedSep 22, 1999Term endedJuly 8, 2011

Sources & verification

Official EPO records

Full published documentClaims, description and drawings as a PDF.EPOEuropean Patent RegisterProcedure, status, file inspection and legal events.EPOLinked open EP data recordThe bibliographic record this page is built from.EPO

Cross-check elsewhere

Google PatentsFull text, worldwide family, citing patents and legal events.patents.google.comEspacenetNational family members and their legal status.European Patent Office

Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.